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rosepetal72 · Mar 14, 2008, 08:11 AM

Hello everyone. I am trying to cut a window from my kitchen to my livingroom(above our kitchen sink). When I cut into the wall I noticed right in the center was a vent pipe that goes from the basement all the way to the roof. I was wondering if I can move that? Can I move this pipe?

speedball1 · Mar 14, 2008, 08:18 AM

Originally Posted by rosepetal72

Hello everyone. I am trying to cut a window from my kitchen to my livingroom(above our kitchen sink). When I cut into the wall I noticed right in the center was a vent pipe that goes from the basement all the way to the roof. I was wondering if I can move that? Can I move this pipe?

Yes you can. You may off set the vent with 45's or 90's If I knew the material of the pipe I could tell you more. Good luck, tom

massplumber2008 · Mar 14, 2008, 08:18 AM

Hi rose:

There is no reason you cannot move it as long as you use the right fittings and keep the pipe the same size throughout.

I figure you want to offset this with a... 90 degree fitting over, 90 degree fitting up, 90 over, 90 up and connect back onto old vent. This is OK you if you need to. The idea here, however, is that you use as few 90s to do this as possible... SO, if you can use to 45s to offset the stack (in place of 2 90s), that's great, OR if can run straight up into attic space and connect into same size vent then again... that reduces numbers of 90 degree fittings needed.

Simple fact though, in this case, 4 90 degree fittings can be used to relocate the vent.

Hope that helped... Mark

(WOW Tom... right on top of each other on that one! )

.

ballengerb1 · Mar 14, 2008, 08:24 AM

You got it straight from two plumbers, totally moveable. Keep in mind that you will need to remove about a foot of drywall on 3 sides of the new opening , at least on one side. You need room to make your turns with what I hope is PVC. If the window is in a load bearing wall you should come back and tell us since some header work will be needed.

rosepetal72 · Mar 14, 2008, 08:35 AM

:)

Originally Posted by speedball1

Yes you can. You may off set the vent with 45's or 90's If I knew the material of the pipe I could tell you more. Good luck, tom

:) Thanks for the advice--it's black pipe.

rosepetal72 · Mar 14, 2008, 08:37 AM

Thanks for the help

Originally Posted by massplumber2008

Hise rose:

There is no reason you cannot move it as long as you use the right fittings and keep the pipe the same size throughout.

I fgure you want to offset this with a...90 degree fitting over, 90 degree fitting up, 90 over, 90 up and connect back onto old vent...This is ok you if you need to. The idea here, however, is that you use as few 90s to do this as possible....SO, if you can use to 45s to offset the stack (in place of 2 90s), that's great, OR if can run straight up into attic space and connect into same size vent then again...that reduces numbers of 90 degree fittings needed.

Simple fact though, in this case, 4 90 degree fittings can be used to relocate the vent.

Hope that helped...Mark

(WOW Tom....right on top of each other on that one!!)

.

ballengerb1 · Mar 14, 2008, 08:37 AM

OK, that can be another issue. You should not cut that pipe just yet, it could be carrying some heavy load. I do not have the great pictures that Tom and Mark have but they can show you how to jack the pipe so you don't have 20' of pipe hitting you in the head.

rosepetal72 · Mar 14, 2008, 08:38 AM

Thank you!

Originally Posted by ballengerb1

You got it straight from two plumbers, totally moveable. Keep in mind that you will need to remove about a foot of drywall on 3 sides of the new opening , at least on one side. You need room to make your turns with what I hope is PVC. If the window is in a load bearing wall you should come back and tell us since some header work will be needed.

rosepetal72 · Mar 14, 2008, 10:15 AM

Originally Posted by rosepetal72

Hello everyone. I am trying to cut a window from my kitchen to my livingroom(above our kitchen sink). When I cut into the wall I noticed right in the center was a vent pipe that goes from the basement all the way to the roof. I was wondering if I can move that? Can I move this pipe?

It is a black plastic pipe about 1 to 2 inches in diameter. Sorry guys.

ballengerb1 · Mar 14, 2008, 11:04 AM

ABS, you can treat that like PVC, not much weight on it. I would still clamp the pipe above the cut but this one should not hurt you like cast iron. After you make the cut at the top you know if you have any bounce in the lower pipe and can deal with that. Splice in more ABS or switch to PVC using All Purpose glue. No need to prime ABS just scuff the surfaces of both the pipe and the coupling. I'd use 4 90 degree couplings.